Aoi, a close friend of his mother, comes to Tokyo from the countryside for a sightseeing trip. Struck by her stunning beauty and slender, graceful figure, Ryota falls for her at first sight. Since she's staying overnight, Ryota looks for any chance to get closer to her. Late at night, he nervously works up the courage to make his move, but his trembling hands accidentally touch her, causing Aoi to wake up midway. As a flustered Ryota panics, Aoi calmly asks him, "Don't you want to try having sex?" Hesitant yet excited, his heart racing, Ryota gathers his resolve to take their relationship further.